Reaction furnace for carbon disulfide production

Abstract

The invention relates to a reaction furnace for carbon disulfide production. At least two reaction chambers are integrated above a sulfur gasification chamber; a gasified sulfur raw material is supplied to the integrated reaction chambers from the lower parts of the reaction chambers; an outer housing is arranged at the peripheries of the integrated reaction chambers; heating channels are arrangedbetween the outer housing and the integrated reaction chambers and between the integrated reaction chambers; a charging device adding a carbon raw material into the integrated reaction chambers fromthe upper parts of the reaction chambers is arranged at the upper parts of the integrated reaction chambers; and a system comprises a sulfur material supply part, a carbon material supply part (1), areaction part (2), a flue gas emission system (4) and a deslagging system (3). Compared with the prior art, the furnace is small in floor area, long in service life and low in energy consumption during production, and particularly, a single furnace body can achieve large-scale and continuous carbon disulfide production.

Description

technical field [0001] The invention belongs to the technical field of carbon disulfide production, in particular to a reaction furnace used in the production of carbon disulfide. Background technique [0002] At present, there are two methods of carbon disulfide production in terms of raw materials, natural gas method (methane method) and coke method (semi-coke method). [0003] The natural gas method is currently the international and domestic mainstream technology. It is a continuous production process with a small footprint, large production scale and high degree of automation. However, compared with the coke method, it has the following disadvantages: [0004] ① The natural gas method uses natural gas and sulfur as raw materials to produce CS2, adopts a tubular reaction, uses natural gas as a heat source to heat the reaction tube (indirect heating through the high-temperature radiation of methane gas on the tube wall), the temperature is 600°C-800°C, and the high pressu...

AI Technical Summary

Problems solved by technology

[0010] 1. Although the cylindrical barrel structure and the built-in heating chamber solve the increase in the volume of the reactants in the furnace, the heating area is not enough. If the reaction chamber is enlarged, the heat conducted by the heating surface of the inner wall and the heating surface of the outer wall will not radiate to the deep reactants. On the other hand, sufficient temperature cannot be provided to the reactants, resulting in incomplete reaction, increased energy consumption, and reduced output

[0011] 2. The U-shaped sulfur gasification chamber is for liquid sulfur to flow into the gasification chamber by itself, relying on the temperature of the furnace bottom and side wall to absorb heat and radiate gasification, and the gasification efficiency is low

Due to the large-scale reaction furnace, the carbon raw material reactants in the reaction chamber increase, and the U-shaped sulfur gasification chamber cannot provide enough gaseous sulfur, resulting in a mismatch of materials (sulfur and carbon) and insufficient reaction

[0012] .Although the design of the disc flap valve and the furnace cover prevents most of the flue gas from escaping, it cannot completely eliminate fugitive emissions

[0013] .The design of the feeding port and slag outlet can only be fed intermittently, and the slag is discharged intermittently. After the feeding and slag discharge is opened, the crude gas of the reaction compound CS2 (carbon disulfide) H2S (hydrogen sulfide) leaks out. This design cannot be used as a continuous production device. Provide basic conditions

During the process of feeding and slagging, the hot air in the reaction furnace leaks out, and the cold air enters, which affects the temperature fluctuation in the furnace, reduces the output, and damages the equipment.

[0014] .The upper part of the central heating chamber is equipped with a heater, and the lower part is provided with a smoke outlet, which increases part of the heating area, but the smoke outlet runs through the heating chamber, the reaction chamber and the external fire chamber, and the heating is uneven due to the smoke coming out from the side

When the heating pipe passes through the reaction chamber of the heating chamber and the external fire chamber, the temperature difference between the inside and outside causes the expansion coefficient of the smoke outlet pipe to be unequal, which increases the failure rate of the device

[0015] Chinese utility model patent CN 205973817 U discloses a carbon disulfide reaction furnace. The inner tank of the furnace is divided into two reaction chambers with a conical feeder as a boundary, and the liquid sulfur is separately gasified to prevent the slag and sulfur from mixing and tilting. It is very feasible to prevent carbon slag from entering the gasification chamber through the reverse exit of gaseous sulfur, but after the furnace body is enlarged, it cannot fully meet the production needs, and has the following disadvantages:

[0016] 1. After the furnace body is enlarged, the gasification chamber in this patent relies on external heating and the sulfurization platform conducts heat to the liquid sulfur distribution, and the heating area is too small to produce a large amount of gaseous sulfur

[0017] 2. After the furnace body is enlarged, the inclined gaseous sulfur outlet is too small, the gas flow rate is too low, and the gaseous sulfur cannot be evenly distributed

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